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VOLUME 25 , ISSUE 12 ( December, 2024 ) > List of Articles

ORIGINAL RESEARCH

Evaluation of Physical Changes and Bond Properties of Monolithic Zirconia Following Surface Treatment with Alumina and Synthetic Diamond Particles: A Comparative X-ray Diffraction Analysis

Arshi I Kazi, Ramandeep Dugal, Pallavi Madanshetty, Aamir Z Godil, Kashif Y Gandhi, Anam M Mukadam

Keywords : Air abrasion, bonding, fracture toughness, laboratory research, phase transformation, surface roughness

Citation Information : Kazi AI, Dugal R, Madanshetty P, Godil AZ, Gandhi KY, Mukadam AM. Evaluation of Physical Changes and Bond Properties of Monolithic Zirconia Following Surface Treatment with Alumina and Synthetic Diamond Particles: A Comparative X-ray Diffraction Analysis. J Contemp Dent Pract 2024; 25 (12):1110-1117.

DOI: 10.5005/jp-journals-10024-3794

License: CC BY-NC 4.0

Published Online: 05-03-2025

Copyright Statement:  Copyright © 2024; The Author(s).


Abstract

Aim: The aim of this study was to compare and evaluate the phase transformation and effect on the bond strength and fracture toughness of monolithic zirconia after surface treatment with alumina and synthetic diamond particles. Materials and Methods: Forty samples of monolithic sintered zirconia discs (Y-TZP) were divided into two groups of 20 samples each. Group A – air abrasion with alumina particles (n = 20); group B – air abrasion with synthetic diamond particles (n = 20). Pretreatment phase and posttreatment of each zirconia sample from group A and group B were evaluated using an X-ray diffraction machine. The surface roughness of each zirconia sample was evaluated using a profilometer. Composite discs were fabricated and bonded to the air-abraded surface of each zirconia sample from group A and group B using a dual-cured resin cement, respectively. These samples were mounted in an acrylic block to determine the bond strength of zirconia with resin cement using a universal testing machine. This was followed by a fracture toughness test of the samples using a Vickers indentation hardness tester. The results were subjected to statistical analysis using a t-test, and relevant statistical conclusions were drawn. Results: The mean ± SD of monoclinic content in group A (alumina particles) and group B (synthetic diamond particles) was 0.82 ± 0.010% and 0.76 ± 0.015%, respectively. The mean ± SD of surface roughness in group A (alumina particles) and group B (synthetic diamond particles) was 0.507 ± 0.106 and 0.513 ± 0.116 µm, respectively, and the mean ± SD of bond strength in group A (alumina particles) and group B (synthetic diamond particles) was 6.11 ± 1.47 and 6.49 ± 0.83 MPa, respectively. The mean ± SD of fracture toughness in group A (alumina particles) and group B (synthetic diamond particles) was 2.63 ± 0.46 0.5 and 5.70 ± 1.03 MPam0.5, respectively. p < 0.05 was considered statistically significant. Conclusion: The distribution of mean monoclinic content was significantly higher in zirconia samples abraded by alumina (Group A) as compared to synthetic diamond particles (Group B). The mean surface roughness and bond strength results were statistically insignificant between both groups. The distribution of mean fracture toughness was significantly higher in group B compared to group A. Clinical significance: Synthetic diamond particles for air abrasion of Y-TZP can be a promising alternative to alumina as they cause minimal changes in the structural integrity without compromising the bond strength.

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